Contraposition — For contraposition in the field of traditional logic, see Contraposition (traditional logic). For contraposition in the field of symbolic logic, see Transposition (logic). Contraposition is a logical relationship between two propositions, or… … Wikipedia

contraposition — noun Etymology: Late Latin contraposition , contrapositio, from Latin contraponere to place opposite, from contra + ponere to place more at position Date: 1551 the relationship between two propositions when the subject and predicate of one are… … New Collegiate Dictionary

contraposition — /kon treuh peuh zish euhn/, n. 1. placement opposite or against. 2. opposition, contrast, or antithesis. 3. Logic. the inference drawn from a proposition by negating its terms and changing their order, as by inferring Not B implies not A from A… … Universalium